CH159059A - Process for the preparation of a triarylmethane dye. - Google Patents

Process for the preparation of a triarylmethane dye.

Info

Publication number
CH159059A
CH159059A CH159059DA CH159059A CH 159059 A CH159059 A CH 159059A CH 159059D A CH159059D A CH 159059DA CH 159059 A CH159059 A CH 159059A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
ethyl
triarylmethane dye
condensed
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH159059A publication Critical patent/CH159059A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Description

  

  Verfahren zur Darstellung eines     Triarylmethanfarbstoffes.       Nach vorliegender Erfindung erhält man  einen die tierische Faser blauviolett färben-    den Farbstoff, vermutlich der Konstitu  tion  
EMI0001.0002     
    indem man 4 . 4'-     Di    -     (butyl-oxyäthyl-amino)-          benzhydrol    mit     Äthyl-4'-sulfobenzylanilin-3-          sulfosäurekondensiert    und die gebildete     Leuko-          verbindung    zum     Farbstoff    oxydiert.  



  <I>Beispiel:</I>       .Man    kondensiert in üblicher Weise 30,6  Teile Formaldehyd 30     o/oig    bei Gegenwart  einer katalytischen Menge einer schwach or-         ganischen    Säure mit 109 Teilen     Butyl-oxy-          äthyl-aminobenzol    zum     4.4'-Di-(butyl-oxy-          äthyl    -     amino)    -     diphenylmethan    und oxydiert  dieses in üblicher Weise, zum Beispiel mit       Bleisuperoxyd    und Schwefelsäure;

   zum ent  sprechenden     Benzhydrol.    Dieses kondensiert  man nach dem Verfahren der deutschen Pa  tentschrift Nr. 68291 mit     Äthy        1-4'-sulfobenzyl-          anilin-3-sulfosäure.    Die erhaltene Leukosulfo-      säure wird     oxydiert;    man erhält einen Farb  stoff, der Wolle und Seide in klaren blauvio  letten Tönen anfärbt, und zwar ebenso stark  wie die um die Hälfte grössere Menge des       Farbstoffes    aus     Tetramethyldiaminobenzhydrol     und     Äthyl-4'-sulfobenzylanilin-3-sulfosäure.     Der Farbton bei     Abendbeleuchtung    ist hier  besonders bemerkenswert.

   Während die Farb  stoffe gemäss der deutschen Patentschrift  Nr. 68291 Färbungen ergeben, die bei künst  lichem Licht in     unerwünschter    Weise sehr  wesentlich röter erscheinen, verändert sich der  neue Farbstoff bei künstlichem Licht kaum.



  Process for the preparation of a triarylmethane dye. According to the present invention, a dye which stains the animal fiber blue-violet, presumably of the constitution
EMI0001.0002
    by 4. 4'-Di- (butyl-oxyethyl-amino) -benzhydrol is condensed with ethyl-4'-sulfobenzylaniline-3-sulfonic acid and the leuco compound formed is oxidized to the dye.



  <I> Example: </I>. 30.6 parts of 30% formaldehyde are condensed in the usual manner in the presence of a catalytic amount of a weak organic acid with 109 parts of butyloxyethylaminobenzene to give 4.4'-di - (butyl-oxy-ethyl-amino) - diphenylmethane and oxidizes this in the usual way, for example with lead peroxide and sulfuric acid;

   to the corresponding benzhydrol. This is condensed according to the method of German Patent No. 68291 with ethyl 1-4'-sulfobenzyl-aniline-3-sulfonic acid. The leucosulfonic acid obtained is oxidized; a dye is obtained that dyes wool and silk in clear blue-violet tones, just as strongly as the half greater amount of the dye from tetramethyldiaminobenzhydrol and ethyl-4'-sulfobenzylaniline-3-sulfonic acid. The hue in evening lighting is particularly noteworthy here.

   While the dyes according to German Patent No. 68291 result in colorations that appear very much redder in an undesirable manner in artificial light, the new dye hardly changes in artificial light.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Triaryl- methanfarbstoffes, dadurch gekennzeichnet, dass man 4. 4'- Di- (butyl - ogyäthyl - amino)- benzhydrol mit Äthyl-4'-sulfobenzylanilin-3- sulfosäure kondensiert und die gebildete Leukoverbindung zum Farbstoff oxydiert. Der Farbstoff löst sich leicht in Wasser und färbt die tierische Faser in klaren blau violetten Tönen. Claim: Process for the preparation of a triaryl methane dye, characterized in that 4'-di- (butyl-ogyethyl-amino) -benzhydrol is condensed with ethyl-4'-sulfobenzylaniline-3-sulfonic acid and the leuco compound formed is oxidized to the dye . The dye dissolves easily in water and colors the animal fiber in clear blue-purple tones.
CH159059D 1930-02-14 1931-02-12 Process for the preparation of a triarylmethane dye. CH159059A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE159059X 1930-02-14
CH154178T 1931-02-12

Publications (1)

Publication Number Publication Date
CH159059A true CH159059A (en) 1932-12-15

Family

ID=25716380

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159059D CH159059A (en) 1930-02-14 1931-02-12 Process for the preparation of a triarylmethane dye.

Country Status (1)

Country Link
CH (1) CH159059A (en)

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